A method to prevent blockage of urban drainage pipe networks

Abstract

This utility model discloses an anti-clogging urban drainage pipe network, belonging to the field of municipal drainage technology. The anti-clogging urban drainage pipe network includes a manhole with a drainage pipe connected to it, and a rectangular filter cylinder for filtering rainwater. An installation groove is provided at the manhole opening, and a fixing frame is fixedly installed on the top of the filter cylinder. The bottom of the fixing frame abuts against the bottom of the installation groove, and the filter cylinder extends into the manhole through the installation groove. A rainwater grate is installed in the installation groove, with its bottom abutting against the top of the fixing frame. This utility model, by sequentially installing a rainwater grate and a filter cylinder at the manhole opening, can not only intercept larger debris in the rainwater but also filter smaller particles and soft debris, reducing the likelihood of clogging the drainage pipe network, decreasing the frequency of cleaning the drainage network, and improving its effectiveness.

Description

Technical Field

[0001] This utility model relates to the field of municipal drainage technology, and in particular to a method for preventing blockage of urban drainage pipe networks. Background Technology

[0002] Urban drainage pipe networks are engineering facilities for treating and discharging urban sewage and rainwater, and are an integral part of urban public utilities. Under the system of separating sewage and rainwater, sewage is collected by drainage pipes, sent to sewage treatment plants, and then discharged into water bodies or recycled; rainwater runoff is collected by drainage pipes and discharged into nearby water bodies.

[0003] Existing pipe networks typically have rain grate at the inlet to intercept larger debris in rainwater and reduce its entry into the manholes. However, some small particles and soft debris (plastic bags, ribbons, etc.) can easily enter through the rain grate and into the manholes, accumulating within the drainage network and causing blockages. Since drainage networks are generally quite long, cleaning them after blockage is difficult. Utility Model Content

[0004] The purpose of this invention is to solve the problem that small particles and soft debris easily accumulate in drainage pipes, causing blockages in the drainage network, and to propose an anti-blockage method for urban drainage networks.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A clog-proof urban drainage network includes a manhole with a drainage pipe connected to it, and a rectangular filter cylinder for filtering rainwater. The manhole opening has an installation groove, and a fixing frame is fixedly mounted on the top of the filter cylinder. The bottom of the fixing frame abuts against the bottom of the installation groove, and the filter cylinder extends into the manhole through the installation groove. A rainwater grate is installed inside the installation groove, with its bottom abutting against the top of the fixing frame.

[0007] In order to increase the filtration area inside the filter cartridge, preferably, a protrusion is fixedly provided at the bottom of the filter cartridge.

[0008] To facilitate the accumulation of debris at the bottom of the protrusion, the protrusion is further designed with a frustum-shaped structure.

[0009] In order to further filter the downpipe, preferably, the drain pipe includes a downpipe and an uppipe. The inlet end face of the downpipe is provided with an installation hole, and a filter screen is threaded into the installation hole. A handle is fixedly installed on the end face of the filter screen located inside the pipe well.

[0010] Furthermore, the axes of both the downlink and uplink pipes are inclined.

[0011] Preferably, a lifting plate is provided at the bottom of the well, and multiple sets of lifting rings are fixedly installed on the lifting plate.

[0012] Compared with the prior art, this utility model provides a method for preventing blockage in urban drainage pipe networks, which has the following beneficial effects:

[0013] 1. This anti-clogging urban drainage network, by sequentially installing rainwater grates and filter cartridges at the manhole opening, can not only intercept larger debris in rainwater, but also intercept smaller particles and soft debris through the filter cartridges, reducing the likelihood of clogging the drainage network, reducing the frequency of cleaning the drainage network, and improving the usage effect;

[0014] 2. This anti-clogging urban drainage network has a protrusion fixedly installed at the bottom of the filter cartridge. This not only increases the filtration area of ​​the filter cartridge, but also allows the debris intercepted to accumulate along the slope of the protrusion to the bottom of the protrusion, which can extend the single use time of the filter cartridge and improve the use effect.

[0015] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model, by sequentially setting a rainwater grate and a filter cylinder at the wellhead, can not only intercept larger debris in the rainwater, but also intercept smaller particles and soft debris through the filter cylinder, reducing the likelihood of clogging the drainage network, reducing the frequency of cleaning the drainage network, and improving the usage effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an anti-blocking urban drainage pipe network proposed in this utility model;

[0017] Figure 2 This is a cross-sectional view of an anti-blocking urban drainage pipe network proposed in this utility model;

[0018] Figure 3 A schematic diagram of the structure of a filter cartridge for preventing clogging of urban drainage pipe networks proposed in this utility model. Figure 1 ;

[0019] Figure 4 A schematic diagram of the structure of a filter cartridge for preventing clogging of urban drainage pipe networks proposed in this utility model. Figure 2 .

[0020] In the diagram: 1. Manhole; 101. Installation slot; 102. Downstream pipe; 103. Upstream pipe; 2. Rain grate; 3. Fixing frame; 301. Filter cartridge; 302. Protrusion; 303. Connecting rod; 4. Filter screen; 5. Lifting plate; 501. Lifting ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example 1

[0024] Reference Figures 1-4 A method for preventing blockages in urban drainage pipe networks includes a manhole 1 with a drainage pipe connected to it, and a rectangular filter cartridge 301 for filtering rainwater. An installation groove 101 is provided at the opening of the manhole 1. A fixing frame 3, with a ring-shaped rectangular structure, is fixedly installed on the top of the filter cartridge 301, with its bottom abutting against the bottom of the installation groove 101. A cross-shaped connecting rod 303 is fixedly installed inside the fixing frame 3 to facilitate the removal and installation of the filter cartridge 301 from the manhole 1, improving its effectiveness. The filter cartridge 301 extends into the manhole 1 through the installation groove 101. A rainwater grate 2 is installed within the installation groove 101, with its bottom abutting against the top of the fixing frame 3. In other words, the rainwater grate 2 is positioned above the fixing frame 3, allowing for the filtering of incoming rainwater. The filter cartridge 301 intercepts larger debris in the rainwater within the manhole 1, reducing the likelihood of clogging the drainage network. It also intercepts smaller particles and soft debris in the rainwater, minimizing their entry into the drainage network and thus reducing blockages. For regular cleaning of the filter cartridge 301, the rainwater grate 2 is first lifted and moved from the installation groove 101. Then, the filter cartridge 301 is pulled out of the manhole 1 by holding the connecting rod 303. The intercepted debris is then cleaned. The operation is simple, cleaning is convenient, and the effectiveness is improved. Furthermore, a fall protection net is installed inside the manhole 1. Two hanging rings are fixed to the inner walls on both sides of the manhole 1. The four corners of the fall protection net are tied to the hanging rings with ropes to prevent accidental loss of the rainwater grate 2 and filter cartridge 301, thus preventing personnel from falling into the manhole 1 and improving safety.

[0025] In use, by sequentially installing a rainwater grate 2 and a filter cylinder 301 at the opening of the manhole 1, not only can larger debris in the rainwater be intercepted, but smaller particles and soft debris can also be intercepted through the filter cylinder 301, reducing the likelihood of clogging the drainage network, reducing the frequency of cleaning the drainage network, and improving the usage effect.

[0026] Reference Figures 2-4 A protrusion 302 is fixedly provided at the bottom inner side of the filter cartridge 301. Mesh holes are provided on both the filter cartridge 301 and the protrusion 302 to intercept smaller particles and soft debris (plastic bags, ribbons, etc.) in rainwater. The protrusion 302 has a truncated quadrangular structure. In use, by fixing the protrusion 302 at the bottom inner side of the filter cartridge 301, the filtration area of ​​the filter cartridge 301 can be increased. Moreover, the debris intercepted can accumulate along the slope of the protrusion 302 to the bottom of the protrusion 302, which can extend the single use time of the filter cartridge 301 and improve the use effect.

[0027] Reference Figure 1 and Figure 2 Here, the drainage pipes are designed as a downpipe 102 and an uppipe 103. This means that upstream rainwater can enter the current manhole 1 through the uppipe 103 and then flow downstream along the downpipe 102. The current uppipe 103 is the downpipe 102 in the upstream manhole 1. An installation hole is provided at the inlet end of the downpipe 102, and a filter screen 4 is threaded into the installation hole. The filter screen 4 has a smaller mesh diameter than the filter cylinder 301, further reducing debris entering the downpipe 102. A handle is fixedly installed on the end face of the filter screen 4 inside the manhole 1 for easy installation and removal. Both the downpipe 102 and the uppipe 103 are inclined, tilted downstream, facilitating rainwater discharge. During use, by installing the filter screen 4 at the inlet end of the downpipe 102, the rainwater entering the downpipe 102 can be filtered a second time, further reducing drainage network blockage and improving performance.

[0028] Reference Figure 2 A lifting plate 5 is installed at the bottom of the manhole 1. The lifting plate 5 has gaps around its perimeter and the inner wall of the manhole 1. The bottom of the lifting plate 5 abuts against the bottom of the manhole 1. Multiple sets of lifting rings 501 are fixedly installed on the lifting plate 5. There are two to eight sets of lifting rings 501. Here, we prefer four sets, which are located at the four corners of the lifting plate 5. When the manhole 1 is cleaned regularly, the rainwater grate 2, filter cylinder 301 and anti-fall net are disassembled, and the lifting plate 5 is lifted using a simple hoist or crane. The lifting plate 5 and the mud and sand accumulated on the lifting plate 5 can be lifted out, which facilitates cleaning and improves the use effect.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A clog-resistant urban drainage network, comprising a manhole (1) to which a drainage pipe is connected, characterized in that, It also includes a cuboid filter cartridge (301) for filtering rainwater. The well (1) has an installation groove (101) at the opening. A fixing frame (3) is fixedly installed on the top of the filter cylinder (301). The bottom of the fixing frame (3) abuts against the bottom of the installation groove (101). The filter cylinder (301) extends into the well (1) through the installation groove (101). A rain grate (2) is installed in the installation groove (101). The bottom of the rain grate (2) abuts against the top of the fixing frame (3).

2. The anti-clogging urban drainage pipe network according to claim 1, characterized in that, A protrusion (302) is fixedly provided at the bottom of the filter cartridge (301).

3. The anti-clogging urban drainage pipe network according to claim 2, characterized in that, The protrusion (302) has a frustum-shaped structure.

4. The anti-clogging urban drainage pipe network according to claim 1, characterized in that, The drainage pipe includes a downpipe (102) and an uppipe (103). The downpipe (102) has an installation hole at its inlet end face. A filter screen (4) is threaded into the installation hole, and a handle is fixedly installed on the end face of the filter screen (4) inside the manhole (1).

5. A clog-resistant urban drainage pipe network according to claim 4, characterized in that, The axes of the down-flow pipe (102) and the up-flow pipe (103) are both inclined.

6. A clog-resistant urban drainage pipe network according to claim 1, characterized in that, A lifting plate (5) is provided at the bottom of the well (1), and multiple sets of lifting rings (501) are fixedly installed on the lifting plate (5).

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